Wrist-pin connection.



A. L. CAMPBELL. WRIST PIN CONNECTION.

APPLICATION HLED AUG.22, I916.

1 09,393. I 121mm Dec. 19, 1916 ALFRED I1. LAMPBELL, F

ATE??? o ELMHUBST, NEW YORK, ASSIGNOR '20 BREWSTER 60 CO., A CORPORATION OF NEW-YQBE'.

. WRIST-PIN comenccrrois.

' j messes,

andSta'te of New York, have invented a new.

, and useful lmprovement in lVrist-Pin Con nections, ofwhich the following is a specification.

My invention relates especially to means for connecting the valve-operating pitinen of a Knight sleeve valve engine to the sleeve valves, but is applicable as well to many other similar mechanical situations.

The object of my invention is to provide a compact, secure and convenient connecting means for this purpose, and to this end my invention, in its present embodiment, comprises several features, including bearing lugs in which the- Wrist pin is mounted to rock, a peripherally grooved Wrist pin, a

sleeve through which the wrist pin is passed,

interposed between the wrist pin bearings, a pitm'an having a hub through which the sleeve is passed, a doubly bent pin-way extending transversely through the sleeve, the wrist pin groove and the pitman, and a looking pin which is forced through the wrist pin grooveand through the two bends in the pin-way so as to lock the wrist pin securely in position with respect to the sleeve and pitman hub, and by its double deflection remain itself securely locked in place.

In order that my invention may be fully understood, 1 shall first describe in detail the mode in which lat present prefer to carry my invention into practice and then define the spirit and scope of theinvention in the claims.

Reference is to be had to the accompanying drawings forming part of this specifica: tion in which like parts are designated by the same numerals in all the figures.

Figure 1 is a sectional side elevatid'n showing one embodiment of my invention applied to the wrist pin connection of a Knightsleevc valve engine. Fig. 2 is an enlarged sectional plan view of the said wrist pin connection on the line 22, Fig. 1. ther enlarged cross-sectional elevation of the same. i L In the drawings, 4 designates the reciprocat-ing sleeve valves of anordinary Knight sleeve valve engine, 5 designates the valve operating crank shaft, andfi the Connecting Fig. 3 is a still tur-' Specification of Letters Patent. flat er g-3m Bag, 1Q), 1916,, Application filed August 255, 1916. ficrtal 16,362.

rods or pit-men by which the sleeves 4 are reciprocated by the crank shaft 5.

To connect each pitman 6 with the sleeve l, I fix, b preference, integrally on the out-. side of t e sleevaa pair of lugs 7, having bearings 8 for a wrist pin 9, which latter is formed medially with a peripheral locking groove 10. The wrist pin 9 is passed throu h the lug bearings 8, and through a closefitting sleeve 11, fitted between the lug bearings 8, the sleeve 11 having been pre-.

viously passed through the close-fitting hub 12 formed on the upper end of the pitman 6.

Through the hub 12 and sleeve 11 is formed a transversely diagonal pin-way '13, leading through the wrist pin groove 10, and the pin- Way 1?; leads downward into a pin cavity 14 formed by the interior of the hollow shank ofthe pitman 6, the wall of said cavity 'being bent or at an oblique angle with respect to the axis of the pin-way 13. A headed wrist pin locking-pin 15, preferably of spring metal, is then fitted and forcibly driven into the pin-way 13, where its end is first deflected laterally by and through the wrist pin groove 10, then bent back into the lower part of the pin-way 13, and then deflected laterally again by the relatively bent or inclined wall of the pitman cavity 14. The locking pin 15 thus securely locks the wrist pin 9 in position in its rock bearings 8, and to the sleeve 11, and the hub l2'of the pitman 6, and at the same time is securely locked in itspin-way by its double deflection produced by the out-of-line wrist pin groove 10, and the, angular wall of the cavity '14.

It is evident that my invention may take various other forms according to the situation to which it is applied, and its embodiment may be otherwise greatly varied without departing from the boundaries of my invention, for a definition of which reference is to be had to the following claims.

I claim asmy invention:

1. The combination, with a wrist pin and a pit-man having a cross pin-way leading by the wrist-pin and bent beyond said wrist pm, of a locking pin forced by said wrist pin in said pin-Way and doubly deflected by the "wrist pin and the bend in thepin-way.

2; The combination, with a wrist pin having a peripheral groove and a pitman having 21 ml) surrofinding the pin driven'thmugh :'3Ri(i cross pin-Way PQIiPhQZ'l-I groove and bent bejyont i the @veby the bend in the pin-Way.

The'ombination, with i1. Wrist pin and A ez pin bearings, a sleeve on the Wrist pin haw-men 'ihe'be-uu'ing ,and a pitma'n havin a sleeve, and crass pmand mws s Way exiending thmngh the hub and the sleeve by the must pm and bent beyond the Wrist pill-W3,

bend in in of a locking pin driven into" the 10 y by ti gg Wrist pin and bani; by the 

